libs/ardour/panner.cc

   1 /*
   2     Copyright (C) 2004-2011 Paul Davis
   3
   4     This program is free software; you can redistribute it and/or modify
   5     it under the terms of the GNU General Public License as published by
   6     the Free Software Foundation; either version 2 of the License, or
   7     (at your option) any later version.
   8
   9     This program is distributed in the hope that it will be useful,
  10     but WITHOUT ANY WARRANTY; without even the implied warranty of
  11     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12     GNU General Public License for more details.
  13
  14     You should have received a copy of the GNU General Public License
  15     along with this program; if not, write to the Free Software
  16     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  17
  18 */
  19
  20 #include "ardour/audio_buffer.h"
  21 #include "ardour/buffer_set.h"
  22 #include "ardour/debug.h"
  23 #include "ardour/panner.h"
  24 #include "ardour/pannable.h"
  25 #include "ardour/session.h"
  26 #include "ardour/utils.h"
  27
  28 #include "pbd/stacktrace.h"
  29
  30 using namespace std;
  31 using namespace ARDOUR;
  32
  33 Panner::Panner (boost::shared_ptr<Pannable> p)
  34         : _pannable (p)
  35         , _bypassed (false)
  36 {
  37 }
  38
  39 Panner::~Panner ()
  40 {
  41         DEBUG_TRACE(PBD::DEBUG::Destruction, string_compose ("panner @ %1 destructor, pannable is %2\n", this, _pannable));
  42 }
  43
  44 void
  45 Panner::set_bypassed (bool yn)
  46 {
  47         if (yn != _bypassed) {
  48                 _bypassed = yn;
  49                 StateChanged ();
  50         }
  51 }
  52
  53 int
  54 Panner::set_state (const XMLNode& node, int version)
  55 {
  56         const XMLProperty* prop;
  57         XMLNodeConstIterator iter;
  58
  59         if ((prop = node.property (X_("bypassed"))) != 0) {
  60                 set_bypassed (string_is_affirmative (prop->value()));
  61         }
  62
  63         return 0;
  64 }
  65
  66 XMLNode&
  67 Panner::get_state ()
  68 {
  69         XMLNode* node = new XMLNode (X_("Panner"));
  70
  71         node->add_property (X_("bypassed"), (bypassed() ? "yes" : "no"));
  72
  73         return *node;
  74 }
  75
  76 void
  77 Panner::distribute (BufferSet& ibufs, BufferSet& obufs, gain_t gain_coeff, pframes_t nframes)
  78 {
  79         uint32_t which = 0;
  80
  81         for (BufferSet::audio_iterator src = ibufs.audio_begin(); src != ibufs.audio_end(); ++src, ++which) {
  82                 distribute_one (*src, obufs, gain_coeff, nframes, which);
  83         }
  84 }
  85
  86 void
  87 Panner::distribute_automated (BufferSet& ibufs, BufferSet& obufs,
  88                               framepos_t start, framepos_t end, pframes_t nframes, pan_t** buffers)
  89 {
  90         uint32_t which = 0;
  91
  92         for (BufferSet::audio_iterator src = ibufs.audio_begin(); src != ibufs.audio_end(); ++src, ++which) {
  93                 distribute_one_automated (*src, obufs, start, end, nframes, buffers, which);
  94         }
  95 }
  96
  97 void
  98 Panner::set_automation_style (AutoStyle style)
  99 {
 100         _pannable->set_automation_style (style);
 101 }
 102
 103 void
 104 Panner::set_automation_state (AutoState state)
 105 {
 106         _pannable->set_automation_state (state);
 107 }
 108
 109 AutoState
 110 Panner::automation_state () const
 111 {
 112         return _pannable->automation_state();
 113 }
 114
 115 AutoStyle
 116 Panner::automation_style () const
 117 {
 118         return _pannable->automation_style ();
 119 }
 120
 121 bool
 122 Panner::touching () const
 123 {
 124         return _pannable->touching ();
 125 }
 126
 127 set<Evoral::Parameter>
 128 Panner::what_can_be_automated() const
 129 {
 130         return _pannable->what_can_be_automated ();
 131 }
 132
 133 string
 134 Panner::describe_parameter (Evoral::Parameter p)
 135 {
 136         return _pannable->describe_parameter (p);
 137 }
 138
 139 string
 140 Panner::value_as_string (boost::shared_ptr<AutomationControl> ac) const
 141 {
 142         return _pannable->value_as_string (ac);
 143 }